Water-based color paste for coloring plastic and preparation method of water-based color paste

A water-based color paste and plastic technology, applied in the direction of pigment paste, etc., can solve the problems of complicated preparation methods, and achieve the effect of reducing toner and spots, reducing the amount of pigment, and improving the smoothness

Inactive Publication Date: 2021-05-04
ZHEJIANG NAMEI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its preparation method is complex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method for plastic coloring water-based color paste, comprising the following steps:

[0025] (1) Wetting and dispersing: put 7.5kg of polyurethane dispersant, 6kg of propylene glycol, 0.1kg of defoamer, and 45.8kg of deionized water in a bead mill with zirconium beads, and stir and disperse at a speed of 500rpm to make it evenly mixed 10kg of polyurethane resin carrier and 0.5kg of light stabilizer were added under stirring to disperse evenly, 30kg of carbon black was added to the dispersion, and dispersed at a high speed at a speed of 1000rpm to fully wet the carbon black to obtain a grinding dispersion.

[0026] (2) Grinding: Send the grinding dispersion obtained in step (1) into a bead mill, grind in the bead mill for 2 hours, use a laser particle size analyzer to test that the particle size D90 of the color paste is 0.28 μm, and stop grinding.

[0027] (3) Adjustment: Add 0.1kg of anti-mold and fungicide to the color paste in step (2), rotate at 1000r...

Embodiment 2

[0029] A preparation method for plastic coloring water-based color paste, comprising the following steps:

[0030] (1) Wetting and dispersing: put 5kg polyacrylate dispersant, 5kg ethylene glycol, 0.1kg defoamer, and 34.5kg deionized water in a bead mill with zirconium beads, stir and disperse at a speed of 500rpm, so that Mix evenly, add 15kg of acrylic resin carrier and 0.2kg of toughening agent to disperse evenly while stirring, and add 40kg of phthalocyanine blue into the dispersion. Disperse at a high speed of 1000rpm to fully wet the phthalocyanine blue to obtain a grinding dispersion.

[0031] (2) Grinding: Send the grinding dispersion obtained in step (1) into a bead mill, grind in the bead mill for 4 hours, use a laser particle size analyzer to test that the particle size D90 of the color paste is 0.72 μm, and stop grinding.

[0032] (3) Adjustment: Add 0.2kg of anti-mold and fungicide to the color paste in step (2), rotate at 1000rpm, stir for 0.5h; store at 50°C fo...

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PUM

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Abstract

The invention provides water-based color paste for coloring plastics. The water-based color paste for plastic coloring comprises the following raw materials: toner, a resin carrier, a wetting dispersant, a humectant, a defoaming agent, a mildew-proof bactericide, a functional additive and deionized water. The water-based color paste is prepared by fully wetting and uniformly dispersing the toner by using the dispersing agent and then combining with a fine bead milling process. The water-based color paste can be easily combined with plastic resin, toner points and spots on the surface of a plastic product are reduced, the smoothness of the surface of the plastic product is improved, and the use amount of pigment and the adverse effect on the performance of plastic are reduced. The prepared water-based color paste for plastic coloring is high in color concentration, small in particle size, excellent in dispersing performance, high in storage stability, good in compatibility with plastic resin, safe and environmentally friendly.

Description

technical field [0001] The invention relates to the field of plastic coloring, in particular to a water-based color paste for plastic coloring and a preparation method thereof. Background technique [0002] Plastic colorant is an additive used as a raw and auxiliary material in the processing technology of plastic materials to beautify, decorate, facilitate identification, improve weather resistance, improve mechanical properties, and improve optical properties. Common plastic colorants include powder colorants and masterbatches. [0003] With the continuous development of the plastic industry, the requirements for the coloring quality of plastic colorants are getting higher and higher, such as bright color, high tinting strength, high temperature stability, good dispersibility, wide adaptability and low environmental pollution, etc., especially for High-end products have higher color and performance requirements. However, the general powder colorant and color masterbatch ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D17/00C08J3/20
CPCC09D17/005C09D17/003C08J3/20
Inventor 郭杰
Owner ZHEJIANG NAMEI MATERIAL TECH
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